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Finding the Fourth Proportional to 1,975.87, 2,963.46 and 659.44

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Solution

The fourth proportional to 1,975.87, 2,963.46 and 659.44 is: 989.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.87 : 2,963.46 = 659.44 : x
  2. Step 2: Convert to fraction form
    1,975.87/2,963.46 = 659.44/x
  3. Step 3: Cross multiply
    1,975.87x = 2,963.46 × 659.44
  4. Step 4: Simplify right side
    1,975.87x = 1,954,209.25
  5. Step 5: Solve for x
    x = 1,954,209.25/1,975.87
  6. Step 6: Final answer
    x = 989.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.